Hello, Well, if you really want to decrease cache levels you could at schedule at random times the following command: echo 1 > /proc/sys/vm/drop_caches Adrian JOIAN fedoraproject.ro Chris Tyler wrote: > On Fri, 2009-02-06 at 23:57 +0100, Joshua C. wrote: > >> I have kde 4.2 and f9. After 2+ hours on my computer it has about >> 1,4GB cached memory. I don't see him releasing this memory after time. >> I know it comes from the apps being open but it seems the kernel >> "never" releases the memory after the app terminates. How to make the >> kernel free this memory? I've seen similar cases with kde 3.5.10 and >> f8 and f7. I know kde eats memory but this is too much. Who caches so >> much of it? Why? >> >> The mashine has 2,6 GB RAM (still x86) and 512mb swap which is rarely >> used (~ 50mb at most) and combined cached + app memory totals about 2 >> gb. >> > > Hi Joshua, > > Memory is being used for cache basically because it's not being used for > anything else. The kernel will gladly use that memory for other purposes > when it's needed -- but until then, there's no harm in keeping disk data > around in otherwise-unused memory just in case it's needed later. > > This is why the "free" command shows a "-/+ buffers/cache" line, which > shows you what the memory picture is without the cache (i.e., the memory > that is truly available when needed): > > $ free > total used free shared buffers cached > Mem: 4061388 3796632 264756 0 259244 570224 > -/+ buffers/cache: 2967164 1094224 > Swap: 4194296 2092276 2102020 > > > -Chris > > -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
